The Search and Study of Low-mass Scalar Mesons in the Reaction $np-->np{\pi }^{+}{\pi }^{-}$ at Pn=3.83 Gev/c

Abstract

This work is devoted to search and study scalar ${\sigma }_0{0}^{+}[0^{+}+]$ - mesons in the system of ${\pi }^{+}{\pi }^{-}$ from the reaction $np->np{\pi }^{+}{\pi }^{-}$ at the impulse of the quasimonochromatic neutrons c from the data obtained in an exposure of the 1m H2 bubble chamber of LHE (JINR)The resonance with and has been found out in effective mass distribution. Value of a statistical deviation of this peculiarity from a background is more than four. Spin of the resonance has been estimated, which, with high probability, is equal 0. The other quantum numbers of the resonance have been estimated.